Updated clean script

scripts/clean.ps1

@@ -2,6 +2,12 @@ clear-host
 $path_root = git rev-parse --show-toplevel
 
 $path_project      = join-path $path_root "project"
+$path_build 	   = join-path $path_project "build"
 $path_dependencies = join-path $path_project "dependencies"
 
+if ( Test-Path $path_dependencies ) {
 	Remove-Item $path_dependencies -Recurse
+}
+if ( Test-Path $path_project ) {
+	Remove-Item $path_build -Recurse
+}